Dear student,
Following are the house keeping practises to keep our house clean:-
1) Do not through cooking oils or fat directly in to drain because they may clog the pipe of drain or soil pores after reaching in soil which affect the filtering of water.
2) Do not through chemicals in drain which may kills microbes responsible for water purification.
3) Solid waste like used tea leaves, food items, toy,cottons always throw in the dust bean.
Regards